3.1 sec in total
256 ms
2.7 sec
176 ms
Visit leyboldoptics.com now to see the best up-to-date Leybold Optics content and also check out these interesting facts you probably never knew about leyboldoptics.com
With over 150 years of experience, Bühler Leybold Optics is a leading supplier of thin-film vacuum coating technology. Our state-of-the art solutions include precision or ophthalmic optics application...
Visit leyboldoptics.comWe analyzed Leyboldoptics.com page load time and found that the first response time was 256 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
leyboldoptics.com performance score
name
value
score
weighting
Value3.6 s
31/100
10%
Value11.5 s
0/100
25%
Value9.8 s
10/100
10%
Value1,070 ms
25/100
30%
Value0.145
77/100
15%
Value17.5 s
4/100
10%
256 ms
316 ms
439 ms
290 ms
196 ms
Our browser made a total of 51 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Leyboldoptics.com, 80% (41 requests) were made to Buhlergroup.com and 6% (3 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (686 ms) relates to the external source Buhlergroup.com.
Page size can be reduced by 939.3 kB (67%)
1.4 MB
472.3 kB
In fact, the total size of Leyboldoptics.com main page is 1.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Javascripts take 1.0 MB which makes up the majority of the site volume.
Potential reduce by 50.3 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 50.3 kB or 71% of the original size.
Potential reduce by 10.5 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Leybold Optics images are well optimized though.
Potential reduce by 739.2 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 739.2 kB or 72% of the original size.
Potential reduce by 139.2 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Leyboldoptics.com needs all CSS files to be minified and compressed as it can save up to 139.2 kB or 88% of the original size.
Number of requests can be reduced by 38 (81%)
47
9
The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Leybold Optics. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
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leyboldoptics.com accessibility score
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
leyboldoptics.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Requests the geolocation permission on page load
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
leyboldoptics.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Leyboldoptics.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Leyboldoptics.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
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leyboldoptics.com
Open Graph data is detected on the main page of Leybold Optics. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: